18.5x27" original thick paper concert poster for November concerts of Frank Zappa and the Mothers of Invention at the Capitol Theatre in Portchester, N.Y. The bottom featured an advertisement for a Marshall Tucker Band and Charlie Daniels show a few days later, but this show was cancelled, as noted by the large black stamp. Text design with quirky slogans about the bands at odd angles. The blacked-out line right under the band's name originally said, "Plus Surpise [sic] Guests." Earlier that year, Zappa released his biggest album, Apostrophe, which cracked Billboard's Top 10. Minimal corner tip wear and age toning upper margin. VF. Displays above grade.